1) What is the function of a extensive surface root network in cacti? a) To access water from the low water table b) Anchorage in high winds c) To conserve water in dry conditions d) To take up water quickly during rain showers 2) Leaves in cacti are reduced to spines in cacti to... a) Protect from grazing animals b) Reduce surface area (and water loss) c) Trap a layer of moist air around the plant d) Attract passing insects for pollination 3) How do cacti store water? a) Extensive root network b) Water storage tissues in the stem c) Storage tubor under the surface d) Spines trap a layer of moist air near the stem 4) Desert animals have camouflage to allow them to blend in with their surroundings... a) True b) False 5) All artic animals have which THREE adaptations... a) Large feet that act line snow shoes b) Camouflage to blend in with the surroundings c) A thick layer of fat to insulate the body (and store energy) d) A large surface area to volume ratio e) Excellent vision to spot movement in the snow f) A small surface area to colume ratio 6) The Fennec fox has which of these adaptations to help dissipate heat... a) Large ears b) Very thin limbs c) Very high heart rate d) Many sweat glands 7) Desert animals have a larger surface area (to volume ratio) compared to artic animals... a) True b) False 8) Extremophiles live in extreme environments because... a) They were forced out of their native environment b) They have adapted to the conditions to avoid competition c) Certain organisms can only live in certain conditions 9) Thermophiles can live in... a) High pressure environments b) Very cold environments c) Very hot environments d) A vacuum 10) Cryophiles are able to produce what to keep them alive? a) A cell wall that prevents osmotic death b) Special types of enzymes that do not denature at high temperature c) Channel proteins to take nutrients up into their waxy cytoplasm d) Antifreeze proteins to melt ice around them 11) Competition between organisms is different for plants and animals but what factor do they both compete for? a) Food b) Water c) Territory d) Nutrients 12) Plants also compete for which THREE other resources? a) Nutrients b) Territory c) Space d) Food e) Light f) Mates 13) Animals also compete for which THREE other resources? a) Nutrients b) Territory c) Space d) Food e) Light f) Mates

Yr9 Adaptation Quiz

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